Cyclists have "increased heart rate and respiration," resulting in more CO2 emissions, said state Rep. Ed Orcutt.

Living near high-traffic roads accounts for 14% of all asthma cases, researchers find.

Scientists have created a microbe that converts carbon dioxide into biofuel, a discovery that might boost the battle against climate change.

The worldwide ban on ozone-depleting chemicals stopped Arctic ozone from disappearing and forming an "ozone hole" similar in size to Antarctica's.

Even though Earth is already in an ice age, a surplus of ice is the least of our worries.

Newly declassified photos show a shocking loss of ice in the Arctic as global temperatures continue to rise.

A study explored 50 million laser images from a NASA satellite to calculate the shrinking depth of the ice sheets, finding the edges to be particularly thin.

New study finds that nanoparticles commonly used in antibacterial socks may significantly boost greenhouse gas emissions.

Study reveals that open-water swims have a dramatic effect on young cubs, which are forced to follow their mothers in search of food and solid ground.

Polar bears have ruled the Arctic for 100,000 years, but now they're struggling to keep up as the region undergoes a dramatic transformation.

As the Arctic grows warmer, its sea-ice cover is shrinking at an unprecedented pace. Here's a graphical look at how quickly it's disappearing.

Thanks to the combined technology of satellites and weather stations scattered around the Antarctic Peninsula, researchers can now keep tabs on the region's shi

Long-term thinning of Arctic sea ice combined with an intense, windy storm over the Arctic in early August contributed to a new record low for sea-ice extent, s

Ice loss in Antarctica and Greenland has contributed nearly half an inch to the rise in sea levels in the past 20 years, according to an assessment of polar i

A weather balloon has broken the record for the longest balloon-borne experiment in Antarctica, and is still going strong.

In continued efforts to track changes in glacial and sea ice, NASA's IceBridge plane has begun collecting data in Greenland.

It may be time to retire the groundhog and start tracking Arctic sea ice for a better prediction of late-winter weather.

The vanishing veneer of frozen ocean isn't just vital for polar bears.

Of the 271 general purpose laundry detergents the Environmental Working Group evaluated, only 7 scored a rating of A.

In order to make its employees more comfortable when they want to take a break from work, a sports marketing company from Sao Paulo, Latin Sports, asked Brazili

iFixit.org is dedicated to providing free repair manuals to every gadget on Earth.

Guy Laramee's work speaks to the 'erosion of cultures' and our over-reliance on analytical knowledge, symbolized by the book.

Working with the nonprofit Solar Aid, students earn enough to bring electric light to a school in Kenya

CANLOVE, a collective of graffiti artists, is on a mission to collect and upcycle as many spray cans as possible into art.

Apparently touring other people's chicken coops is what all the cool kids are doing these days.

Several German cities are planning to fight air pollution by eliminating fares on public transport.

Research conducted in Madison, Wisconsin, finds soil in developed residential landscapes is better at absorbing CO2 than forests.

Each of us is a cloud of microscopic particles, chemicals and microorganisms swirling around us that's always there. It's called an exposome, and it's unique.

The whole point of getting out into the natural world is to see, smell and hear the sounds of nature.

A new YouTube integrated map lets Appalachian communities speak out on mountaintop coal mining.

Mountaintop removal mining has destroyed hundreds of mountain peaks and at least 1,200 miles of streams in the Appalachians, and remains a hotly contested issue

U.S. Postal Service expands electronics recycling program. Customers can trade in old cellphones for cash at 3,100 USPS retail locations.

The O'Neill Passive House, America's first passive house retrofit project, requires as much energy to operate as a standard hair dryer.

Eco-Sense, described as North America's first code-approved, seismically engineered load-bearing insulated cob residence, is one of the first projects to gain s

Michael Pollan's State of the Movement Address from the Georgia Organics Convention

Michael Pollan thanks and congratulates several organizations.

Michael Pollan breaks down his address into different components.

Michael Pollan discusses how the food system uses too much fossil fuel and reminds us that solar energy from plants is free.

Michael Pollan explains how healthcare costs are increasing while the amount of money people spend on good food is decreasing and suggests a change.

Michael Pollan explains how public health problems in the past made food so cheap it started costing people their health.

Michael Pollan lays out his ideas about what it would take to reform the food system.

Michael Pollan explains in a nutshell how the system went from working well to its current state.

Michael Pollan explains that if farmers are only growing one or two crops, that means people are only eating one or two crops, which does not make for a healthy

Michael Pollan explains how a variety of plants and animals make for healthy farms, which make for healthy people.

Michael Pollan lists three things that need to be removed in order to get animals back on farms.

Michael Pollan argues that fossil fuel efficiency replaced farmers, and we need to get them back.

Michael Pollan explains how having such a centralized food system can be dangerous to the country.

Michael Pollan predicts local economies will become revitalized and discusses how this will benefit people around the world.

Michael Pollan discusses how people need rethink how they eat and remember to teach children healthy eating.

Michael Pollan reminds us that this is just the beginning. We need to write our legislators and make change happen. Show them that change is happening.